Class 1 Lever When MA<1

Q.

A uniform metre scale is kept in equilibrium. It is supported at the 60 cm mark and a mass M is suspended from the 90 cm mark as shown in the figure. What is the relation between the weight of the scale and the weight of mass M?

1. The weight of the scale is greater than that of the weight of mass M.

2. The weight of the scale is lesser than that of the weight of mass M.

3. The weight of the scale is equal to than that of the weight of mass M.

4. The weight of the mass is zero.

Q.

What is the use of the lever if its mechanical advantage is less than 1?

1. As a force multiplier

2. To obtain the gain in speed

3. As a work multipler

4. To change the direction